downloaded it and my Zone-Alarm (firewall) tilted because Maria Mole wanted to connect to the internet. Why?I refused and continued.Pointed it to my 0.22 Arduino installation and wanted to open an new project based upon Basic/analogRead and an error popped up because it combined the extension .pde and .ino [translation: the system cannot find the file]

off topic may be. but for my info, why would you not move some code up ? i understod the newer version fixed bugs in the old .

ta

Several reasons no to upgrade I used in the past.- upgrading might introduce new issues as behaviour changed in some libraries e.g. Hardware serial flush(), timing of loop()- upgrading costs me more time than maintaining - the size of some libraries have grown, this might be critical for some big sketches - don't know for sure, not eager to find out - Current version of the sketches are stable and have no known issues (aka bugs) any more so why upgrade?- The timing e.g. of millis() / delay() differs and all critical tuning in the sketches needs to be adjusted again.